Ham Radio Extra Class Practice Test

The Federal Communications Commission (FCC) provides an extra class exam to certify the operation of an amateur station. This page covers the extra class radio license needed to operate an amateur radio, also called ham radio. The extra class license is intended for those who have already taken and passed the Technician Class and General Class exams.

Click “Start Test” above to take a free Ham Radio Extra Class practice test!

Ham Radio Extra Class Exam Eligibility

To be eligible for this exam, you need a valid US mailing address, valid proof of identification, and a social security number. You must also have taken and passed the Technician Class exam and the General Class exam.

Ham Radio Extra Class Exam Outline

The Ham Radio Extra Class exam contains 50 multiple-choice questions, which are split into ten main categories.

1. Commission Rules (6 questions)

The six questions in this category are pulled from a pool of 68 questions. The pool of questions is split into six groups:

• Frequency privileges
• Signal frequency range
• Automatic message forwarding
• Stations aboard ships or aircraft
• Power restriction on 630- and 2200-meter bands

• Restrictions on station location
• General operating restrictions
• Spurious emissions
• Antenna structure restrictions
• RACES operations

• Automatic and remote control
• Band-specific regulations
• Operating in and communicating with foreign countries
• Spurious emission standards
• HF modulation index limit
• Band-specific rules

• Amateur Space and Earth stations
• Telemetry and telecommand rules
• Identification of balloon transmissions
• One-way communications

• Volunteer examiner program: definitions
• Qualifications
• Preparation and administration of exams
• Reimbursement
• Accreditation
• Question pools
• Documentation requirements

• Miscellaneous rules: external RF power amplifiers
• Prohibited communications
• Spread spectrum
• Auxiliary stations
• Canadian amateurs operating in the US
• Special temporary authority

2. Operating Procedures (5 questions)

The five questions in this category are pulled from a pool of 61 questions. The pool of questions is split into five groups:

• Amateur satellites
• Orbital mechanics
• Frequencies and modes
• Satellite hardware
• Satellite operations

• Fast-scan television standards and techniques
• Slow-scan television standards and techniques

• Contest and DX operating
• Remote operation techniques
• Log data format
• Contact confirmation
• RF network systems

• Digital modes and procedures for VHF and UHF
• APRS
• EME procedures
• Meteor scatter procedures

• Operating HF digital modes

3. Radio Wave Propagation (3 questions)

The three questions in this category are pulled from a pool of 39 questions. The pool of questions is split into three groups:

• Earth-Moon-Earth (EME) communications
• Meteor scatter
• Microwave tropospheric and scatter propagation
• Auroral propagation
• Daily variation of ionospheric propagation
• Circular polarization

• Transequatorial propagation
• Long-path propagation
• Ordinary and extraordinary waves
• Chordal hop
• Sporadic-E mechanisms
• Ground-wave propagation

• Radio horizon
• Effects of space-weather phenomena

4. Amateur Practices (5 questions)

The five questions in this category are pulled from a pool of 64 questions. The pool of questions is split into five groups:

• Analog and digital instruments
• Spectrum analyzers
• Antenna analyzers
• Oscilloscopes
• RF measurements

• Instrument accuracy and performance limitations
• Probes
• Techniques to minimize errors
• Measurement of Q
• Instrument calibration
• S parameters
• Vector network analyzers
• RF signals

• Phase noise
• Noise floor
• Image rejection
• Minimum detectable signal (MDS)
• Increasing signal-to-noise ratio and dynamic range
• Noise figure
• Reciprocal mixing
• Selectivity
• SDR nonlinearity
• Use of attenuators at low frequencies

• Dynamic range
• Intermodulation and cross-modulation interference
• Third-order intercept
• Desensitization
• Preselector
• Sensitivity
• Link margin

• External RF interference
• Electrical and computer noise
• Line noise
• DSP filtering and noise reduction
• Common-mode current
• Surge protectors
• Single point ground pane

5. Electrical Principles (4 questions)

The four questions in this category are pulled from a pool of 49 questions. The pool of questions is split into four groups:

• Characteristics of resonant circuits
• Series and parallel resonance
• Definitions and effects of Q
• Half-power bandwidth

• RL and RC time constants
• Phase angle in reactive circuits and components
• Admittance and susceptance

• Rectangular coordinates
• Polar coordinates
• Phasors
• Logarithmic axes

• Skin effect
• Real and reactive power
• Electrical length of conductors

6. Circuit Components (6 questions)

The six questions in this category are pulled from a pool of 69 questions. The pool of questions is split into six groups:

• Semiconductor materials and devices
• Semiconductor materials
• Bipolar junction transistors
• Operation and types of field-effect transistors

• Diodes

• Families of digital ICs
• Gates
• Programmable logic devices

• Permeability, core material and configuration
• Transformers
• Piezoelectric devices

• Semiconductor materials and packages for RF use

• Photoconductivity
• Photovoltaic devices
• Optical sensors and encoders
• Optically isolated switching

7. Practical Circuits (8 questions)

The eight questions in this category are pulled from a pool of 99 questions. The pool of questions is split into eight groups:

• Digital circuit principles and logic circuits
• Classes of logic elements
• Positive and negative logic
• Frequency dividers
• Truth tables

• Class of operation
• Vacuum tube and solid-state circuits
• Distortion and intermodulation
• Spurious and parasitic suppression
• Switching-type amplifiers

• Types of networks
• Types of filters
• Filter applications
• Filter characteristics
• Impedance matching

• Solar array charge controllers
• Power supplies and voltage regulators

• Detectors
• Reactance, phase, and balanced modulators
• Mixer stages

• Digital signal processing (DSP) filtering, modulation, and demodulation
• Analog-digital conversion
• Digital filters

• Characteristics and applications of operational amplifiers

• Types of oscillators
• Synthesizers and phase-locked loops
• Direct digital synthesizers
• Stabilizing thermal drift
• Microphonics
• High-accuracy oscillators

8. Signals and Emissions (4 questions)

The four questions in this category are pulled from a pool of 48 questions. The pool of questions is split into four groups:

• Fourier analysis
• RMS measurements
• Average RF power and peak envelope power (PEP)
• Analog/digital conversion Group B
  • Modulation methods
  • Modulation index and deviation ratio
  • Frequency- and time-division multiplexing
  • Orthogonal frequency-division multiplexing (OFDM)
  • Digital communication modes
  • Information rate vs. bandwidth
  • Error correction
  • Constellation diagrams
  • Keying defects and overmodulation of digital signals
  • Digital codes
  • Spread spectrum

  9. Antennas and Transmission Lines (8 questions)

  The eight questions in this category are pulled from a pool of 94 questions. The pool of questions is split into eight groups:

  • Radiation resistance
  • Gain
  • Beamwidth
  • Efficiency
  • Effective radiated power (ERP)
  • Effective isotropic radiated power (EIRP)
  • Azimuth and elevation patterns
  • Gain as a function of pattern
  • Antenna modeling
  • Practical wire antennas
  • Folded dipoles
  • Phased arrays
  • Effects of ground near antennas
  • Yagi antennas
  • Parabolic reflectors
  • Feed point impedance and loading of electrically short antennas
  • Antenna Q
  • RF grounding
  • Matching antennas to feed lines
  • Phasing lines
  • Power dividers
  • Characteristics of open and shorted feed lines
  • Coax versus open wire
  • Velocity factor
  • Electrical length
  • Coaxial cable dielectrics
  • Microstrip
  • The Smith chart
  • Radio direction finding (RDF) techniques
  • Beverage antennas
  • Single- and multiple-turn loops

  10. Safety (1 question)

  The question in this category is pulled from a pool of 12 questions. The pool of questions cover hazardous materials, RF radiation hazards, and grounding.

  Check Out Mometrix's Ham Radio Extra Class Study Guide

  Get practice questions, video tutorials, and detailed study lessons

  

  Ham Radio Extra Class Exam Registration

  You can register for the exam online at the Universal Licensing System page of the Federal Communications Commission website.

  Test Day

  The Extra Class exam is offered by volunteers who work with a Volunteer Exam Coordinate under the direction of the FCC.

  You will need to bring a few things with you on the day of the exam:

  • A valid photo ID, such as your driver’s license or passport
  • FCC Registration Number
  • A check or money order to pay your registration fees
  • An ink pen
  • Two number-two pencils with erasers
  • A calculator that has the memory erased and no formulas saved on it

  Passing Score

  To pass the Ham Radio Extra Class exam, you must answer 37 out of 50 questions correctly, which is a score of 74%.

  You will receive your scores as soon as you finish taking the exam.

  Retaking the Ham Radio Extra Class Exam

  You are allowed to retake the Extra Class exam if you did not pass the first time. You will have to pay the exam fee to retake it, but you may do so as many times as you wish. In fact, you are welcome to retake the exam on the same day as your first take.

  For retakes of the exam, the large pool of questions is utilized in order to create an entirely new version of the exam each time you take it.

  Check Out Mometrix's Ham Radio Extra Class Flashcards

  Get complex subjects broken down into easily understandable concepts